Launched in December 2013, Gaia is destined to create the most accurate map yet of the Milky Way.
By making accurate measurements of the positions and motions of roughly 1% of the total population of stars in the Milky Way, it will answer questions about the origin and evolution of our home galaxy.
The first intermediate data release, containing, among other things, three-dimensional positions and two dimensional motions of a subset of two million stars, demonstrates that Gaia’s measurements are as precise as planned, paving the way to create the full map of one billion stars to be released towards the end of 2017.
Find out more about Gaia:
Press Conference: First Data Release from ESA’s Gaia Mission
Gaia launch replay highlights
From the Solar System to the Hyades cluster
Gaia launch – Full replay
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